STM32F722IC datasheet(29/229 Pages) STMICROELECTRONICS

29 / 229 page

DS11853 Rev 6

29/229

STM32F722xx STM32F723xx

Functional overview

–The VDDUSB rising and falling time rate specifications must be respected

–

In the operating mode phase, VDDUSB could be lower or higher than VDD:

- If the USB (USB OTG_HS/OTG_FS) is used, the associated GPIOs powered by

VDDUSB are operating between VDDUSB_MIN and VDDUSB_MAX.

- The VDDUSB supplies both USB transceiver (USB OTG_HS and USB OTG_FS).

If only one USB transceiver is used in the application, the GPIOs associated to the

other USB transceiver are still supplied by VDDUSB.

- If the USB (USB OTG_HS/OTG_FS) is not used, the associated GPIOs powered

by VDDUSB are operating between VDD_MIN and VDD_MAX.

Figure 8. VDDUSB connected to VDD power supply

Figure 9. VDDUSB connected to external power supply

DD_MIN

time

DD= VDDA = VDDUSB

Power-on

Power-down

Operating mode

DD_MAX

VDD

MS37591V1

MS37590V1

DDUSB_MIN

DD_MIN

time

DDUSB_MAX

USB functional area

DD =VDDA

USB non

functional

area

DDUSB

Power-on

Power-down

Operating mode

USB non

functional

area

STM32F722IC 数据表(PDF) 29 Page - STMicroelectronics

STM32F722IC 数据表(HTML) 29 Page - STMicroelectronics

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